Using Heart Rate MIDI Data to Control Volume in Isadora
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@woland Thanks so much for the information. I tried to download the two User actors, but I'm getting a message that says, "There is no application set to open the document “heartbeat-generator-v2 (1).iua4”. Search the App Store for an application that can open this document, or choose an existing application on your computer. When I click on choose application, Isadora appears, but doesn't allow me to select it. Any insight?
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@dusx I did not see these. Thanks so much!
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@lovardaviskidd said:
Thanks so much for the information. I tried to download the two User actors, but I'm getting a message that says, "There is no application set to open the document “heartbeat-generator-v2 (1).iua4”. Search the App Store for an application that can open this document, or choose an existing application on your computer. When I click on choose application, Isadora appears, but doesn't allow me to select it. Any insight?
You can put that User Actor into your Global User Actor Folder or drag it from Finder into the Scene Editor of an open Isadora document to use it.
For more info please review our tutorial on User Actors: https://support.troikatronix.com/support/solutions/articles/13000091626-isadora-101-tutorial-11-creating-user-actors
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@lovardaviskidd @DusX @Woland @dbini
Re: [Using Heart Rate MIDI Data to Control Volume in Isadora](/topic/9236/using-heart-rate-midi-data-to-control-volume-in-isadora)
I just found out that the app (Movesense), which is connected from my iPhone, is receiving MIDI as a clock and needs to be converted to bpm. Here is what I have tried unsuccessfully.
Real Time Watcher to timer. Calculator A – 60 ÷ seconds → ticks-per-minute. Calculator B – ticks-per-minute ÷ 24 → BPM (HR). A Limit-Scale Value – maps 40-180 BPM to the full CC range 0-127. A Smoother, and a Send Control – sends CC 21 on channel 1 via “Isadora to Ableton Live” (I renamed my IAC Driver).
The signal stops at the Limit-Scale Value and doesn't send an output signal to the smoother, and in turn, the send control.
Any thoughts or ideas to remedy this?
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In the screenshot your value coming into the Limit-Scale Value actor is lower than the ‘limit min’ on that actor’s first input, so nothing is coming out.
More specifically, you told the Limit-Scale Value actor to scale incoming values between 40 and 180 to outgoing values of 0 to 127, but your incoming value in the screenshot is 0.1661, which is well below 40.
Use the Hold Range and Scale User Actor I provided in my first comment to get the range of values and automatically scale them.
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@woland I created a Global User Actor Folder and attempted to drag the hold-range-and-scale.iua4 file from the Finder into the Scene Editor of my open Isadora document, and neither worked. I'm on a MacBook Pro with an M2 Max Chip, 64 GB of Memory, running Sequoia 15.5. My Isadora is 3.2.6.
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Ah, yes those user actors are for Isadora 4. I’ll go grab the Isadora 3 ones for you, one second.
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Also I just noticed in your screenshot you should have your Real Time Watcher connected to a Tap Tempo actor. The way you’ve got it set up the first trigger will just start the Timer actor because triggering the ‘run’ input on a Timer actor more than once doesn’t do anything.
